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Submitted on: 28 April 2004.
Revised on: 21 May 2004.
Accepted on: 19 June 2004.
___________________ACS Sustainable Chemistry & Engineering
Submitted on: 11 June 2001.
Revised on: 18 September 2001.
Accepted on: 20 October 2001.
___________________ACS Sustainable Chemistry & Engineering
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Submitted on: 01 September 2005.
Revised on: 31 October 2005.
Accepted on: 14 November 2005.
___________________ACS Sustainable Chemistry & Engineering